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Added explanation of how dankarmulti works

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Daniel Karling 2021-11-27 19:43:23 +01:00
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commit 380670bd21
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armsrc/Standalone/dankarmulti.c
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@ -31,6 +31,28 @@
* to create the list of modes. You need to use the same names
* here as defined earlier.
*
* How this works:
* The basic idea is to simply include several c-files with additional
* modes into this file. Hopefully the only collision of symbols are
* the RunMod and ModInfo, and these are solved by dankarmulti.h.
*
* First, dankarmulti.h is included once by itself to define some macros
* used later.
*
* For each mode to be included we define MODE_NAME which is a unique
* name to give the mode and MODE_FILE which is the name of the C-file
* for the mode. dankarmulti.h will make sure that RunMod and
* ModInfo is renamed to RunMod_NAME where name is what we defined. It
* will also include the actual mode source code and create a struct
* with function pointer to the run and info functions of the mode.
* At the end of dankarmulti.h it does #undef on MODE_NAME and MODE_FILE
* so that they can be redefined for the next mode to include.
*
* To create a list of the modes we now have available, it is necessary
* to use the START_MODE_LIST, ADD_MODE and END_MODE_LIST macros. This
* could also have been done with some linker magic and a new section,
* or by some other dirty hack. But this works for now.
*
* Usage:
* Single press to cycle between the modes.
* The LEDs will show the currently selected mode.